Home / 215,784.28-297,782.36-120,288.92

Finding the Fourth Proportional to 215,784.28, 297,782.36 and 120,288.92

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Solution

The fourth proportional to 215,784.28, 297,782.36 and 120,288.92 is: 165,998.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784.28 : 297,782.36 = 120,288.92 : x
  2. Step 2: Convert to fraction form
    215,784.28/297,782.36 = 120,288.92/x
  3. Step 3: Cross multiply
    215,784.28x = 297,782.36 × 120,288.92
  4. Step 4: Simplify right side
    215,784.28x = 35,819,918,479.45
  5. Step 5: Solve for x
    x = 35,819,918,479.45/215,784.28
  6. Step 6: Final answer
    x = 165,998.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.